PA6 BALING PETROCHEMICAL YH400 Resin

Material Introduction: PA6 BALING PETROCHEMICAL YH400 is a low‑viscosity fiber‑grade PA6 chip. It features good flowability and easy‑processing performance, with favorable mechanical strength, wear resistance and electrical insulation. Mainly used for spinning (civil yarn & industrial yarn) and as base resin for engineering‑plastic modification.

Main Applications

Fiber spinning: Civil yarn (underwear, socks, shirts etc.) and industrial yarn (tire cord, sail thread, insulating materials, fishing net thread, safety belts etc.).

Engineering plastic modification: Base resin for high‑glass‑fiber reinforced modified compounds.

Injection molding: Gears for precision machinery, housings, hoses, oil‑resistant containers, cable sheaths, textile equipment components.

Performance Parameters

Performance Category	Test Standard / Condition	Unit	Typical Value	Remarks & Interpretation
Physical Properties
Density	‑	g/cm³	1.156	Fiber‑grade PA6 chip
Relative Viscosity	‑	‑	2.4±0.03	Low‑viscosity grade
Hot‑Water Extractables	‑	%	≤0.5	‑
Moisture Content	‑	%	＜0.07	Raw material index
Appearance	Visual inspection	‑	Pure white transparent, free of mechanical impurities, uniform pellets	‑
Mechanical Properties
Tensile Strength	‑	MPa	59.8	‑
Elongation at Break	‑	%	80.6	‑
Flexural Strength	‑	MPa	89.6	‑
Flexural Modulus	‑	MPa	2124	‑
Rockwell Hardness	‑	R	63.8	‑
Notched Impact Strength	‑	kJ/m²	12.1	‑
Molding Shrinkage	‑	%	1.33	‑
Thermal Properties
Melting Point	‑	℃	215‑220	‑
HDT	‑	℃	73.5	‑
Electrical Properties
Volume Resistivity	‑	Ω·cm	4.6×10¹³	‑
Surface Resistivity	‑	Ω	2.0×10¹³	‑
Dielectric Constant	‑	‑	0.67	‑
Dielectric Loss Tangent	‑	‑	4.5×10⁻²	‑

Injection Molding Parameters

Processing Item	Recommended Range / Condition	Notes & Explanations
Drying Treatment	Hot‑air or vacuum drying at 80‑100 ℃ for at least 4‑6 h.	Critical operation. Keep moisture ≤0.1% (raw material moisture＜0.07%) to avoid hydrolysis, bubbles, silver streaks and strength drop. Use immediately after drying or seal properly for heat preservation.
Melt Temperature	230‑270 ℃ general range.	Depends on equipment and articles. Melting point 215‑220 ℃. Avoid temperature＞300 ℃ and long high‑temperature residence to prevent degradation & discoloration.
Mold Temperature	60‑80 ℃ for most parts.	Mold temperature affects crystallinity; proper mold temperature ensures good appearance and performance for YH400.
Injection Pressure	60‑100 MPa, adjust per product & mold design.	Low‑viscosity PA6 with good flowability yet fast cooling; adjust according to structure and wall‑thickness.
Injection Speed	Medium‑high speed.	Faster speed facilitates cavity filling.
Back Pressure	0.5‑1.0 MPa (5‑10 kgf/cm²).	Proper back‑pressure homogenizes melt and improves venting.
Screw Speed	Medium speed.	Prevent excessive shear heat build‑up.
Runner & Gate	Runner and gate dimensions shall not be too small.	PA6 solidifies fast; sufficiently large gate ensures smooth filling.
Shutdown Notice	Purge barrel with PE / PP of good thermal stability on pause or shutdown to prevent carbonization of residual PA6; turn off heating system for long‑term shutdown.	‑

Disclaimer: All above data is for reference only.